color_encoding.h

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/* Copyright (c) the JPEG XL Project Authors. All rights reserved.
 *
 * Use of this source code is governed by a BSD-style
 * license that can be found in the LICENSE file.
 */

#ifndef JXL_COLOR_ENCODING_H_
#define JXL_COLOR_ENCODING_H_

#ifdef __cplusplus
extern "C" {
#endif

typedef enum {
  JXL_COLOR_SPACE_RGB,
  JXL_COLOR_SPACE_GRAY,
  JXL_COLOR_SPACE_XYB,
  JXL_COLOR_SPACE_UNKNOWN,
} JxlColorSpace;

typedef enum {
  JXL_WHITE_POINT_D65 = 1,
  JXL_WHITE_POINT_CUSTOM = 2,
  JXL_WHITE_POINT_E = 10,
  JXL_WHITE_POINT_DCI = 11,
} JxlWhitePoint;

typedef enum {
  JXL_PRIMARIES_SRGB = 1,
  JXL_PRIMARIES_CUSTOM = 2,
  JXL_PRIMARIES_2100 = 9,
  JXL_PRIMARIES_P3 = 11,
} JxlPrimaries;

typedef enum {
  JXL_TRANSFER_FUNCTION_709 = 1,
  JXL_TRANSFER_FUNCTION_UNKNOWN = 2,
  JXL_TRANSFER_FUNCTION_LINEAR = 8,
  JXL_TRANSFER_FUNCTION_SRGB = 13,
  JXL_TRANSFER_FUNCTION_PQ = 16,
  JXL_TRANSFER_FUNCTION_DCI = 17,
  JXL_TRANSFER_FUNCTION_HLG = 18,
  JXL_TRANSFER_FUNCTION_GAMMA = 65535,
} JxlTransferFunction;

typedef enum {
  JXL_RENDERING_INTENT_PERCEPTUAL = 0,
  JXL_RENDERING_INTENT_RELATIVE,
  JXL_RENDERING_INTENT_SATURATION,
  JXL_RENDERING_INTENT_ABSOLUTE,
} JxlRenderingIntent;

typedef struct {
  JxlColorSpace color_space;

  JxlWhitePoint white_point;

  double white_point_xy[2];

  JxlPrimaries primaries;

  double primaries_red_xy[2];

  double primaries_green_xy[2];

  double primaries_blue_xy[2];

  JxlTransferFunction transfer_function;

  double gamma;

  JxlRenderingIntent rendering_intent;
} JxlColorEncoding;

#ifdef __cplusplus
}
#endif

#endif /* JXL_COLOR_ENCODING_H_ */